How to Sew a Reusable Microwave Popcorn Bag

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How to Sew a Microwave Popcorn Bag

Enjoy the convenience of microwave popcorn without all the cost and chemicals that go along with the store-bought kind. This microwave popcorn bag can be used over and over again, and doesn’t require any oil. Just measure some kernels into the bag, stick it in the microwave, and it’ll pop just as fast as the store-bought stuff.

These sew up quick, and would make an excellent gift.

Closeup of Microwave Popcorn Bag

Reusable Microwave Popcorn Bag Tutorial

What You’ll Need:

Optional (but nice to have):

Cotton Fabric

Warning: Do not use anything but 100% cotton, non-metallic fabric and thread for this project. Other materials could burn or melt in the microwave. Wash your fabric, before sewing your popcorn bag.

What You Do:

Pin Microwave Popcorn Bag Fabric Together Right-Sides Facing

Pin the two pieces of fabric together, right-sides facing. Then, sew a 1/4-inch seam around three sides, leaving one of the short sides open.

Turn Fabric Right-Side Out and Push Out Corners

Turn the fabric right-side out, and push out the corners.

Fold Open Seam In

Then, fold the open seam in, and secure it with a few pins or clips.

Topstitch a 1/8-inch Seam on Both Short Ends

Topstitch a 1/8-inch seam along the edge to close the seam. Then, topstitch along the other short side. These will end up forming the opening for your bag, so it’s good to reinforce them.

Fold Top Edge Down Three Inches

Now, lay your fabric out on your work surface with the short sides positioned at the top and bottom, and the fabric you’d like on the outside of your bag facing up. Fold the top edge down three inches.

Bring the Bottom Edge Up to Meet the Top Edge

Then, bring the bottom edge up to meet the top edge. It should completely cover the three-inch fold you just made.

Secure the Sides With Pins or Clips

Secure the sides with a couple pins of clips.

Sew A 1/2-inch Seam Up the Sides of the Microwave Popcorn Bag

Then, sew a 1/2-inch seam up both sides.

Flatten Bottom of Side Seams to Form Triangle

Box the bottom corners of the popcorn bag, so it’ll stand on its own. This is easy to do. Just stick your hand inside the bag, and find the bottom of one of the side seams. Then, use your other hand to flatten out the side of the bag, until the bottom of the seam folds out and forms a triangle.

Now, measure two inches down from the top point of the triangle, and draw a line straight across.

Sew Along Line to Box Corners

Sew along the line you just made. Then, repeat the process on the other side of the bag.

Boxed Corners on Bottom of Microwave Popcorn Bag

Here’s what it should look like when you’re done. Normally, when you make box corners you trim the excess fabric above your seam, but this time we’re going to leave it. Those extra tail pieces will help the bag expand in the microwave.

Microwave Popcorn Bag

Flip your microwave popcorn bag right-side out, and take it for a test drive.

Microwave Popcorn Bag Before Popping

To use your microwave popcorn bag, simply pour 1/2 cup of popcorn kernels into the bag, and place it in the microwave with the flap facing up. I like to put a plate under mine to keep it clean.

Microwave Popcorn Bag After Popping

Then, microwave your popcorn for the same amount of time you normally would. Two-and-a-half to three minutes works well for me. I set the timer for five minutes; then, stop it when the popping slows.

The bag will be hot when you take it out of the microwave, so be careful.

Microwave Popcorn Bag With Popcorn Inside

Fold the flap back, and the bag becomes a bowl! How cool is that?

If you’d like to add a little oil, salt or flavoring to your popcorn, I recommend transferring your popcorn to a bowl, so the bag stays clean. It is machine-washable, though.

There’s nothing to throw away when you’re done, and the bag takes hardly any space to store. I love everything about this reusable microwave popcorn bag.

Do not microwave your popcorn bag for more than five minutes. Overheating could cause scorching or fire. If you need to pop a second batch of popcorn, allow the bag to cool completely, before using it again. Do not heat the bag empty, or leave your microwave unattended when it’s in use.

More Microwave Sewing Projects

Finished Microwaveable Potato Bag

How to Make a Microwaveable Potato Bag

How to Sew a Soup Bowl Cozy

How to Make Microwaveable Soup Bowl Cozies

How to Make Hand Warmers

How to Make Microwaveable Hand Warmers

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  1. Have you ever made a soap sliver holder? I keep trying to figure out how I would do that. I would appreciate any help. Thank you. I love your ideas!

  2. Please tell me where I went wrong. I made one of these and tried it myself before giving as a gift but it didn’t work. I put the recommendation popcorn in and microwaved it for the appreciate time and it didn’t all pop. Only half popped, so I cut the popcorn amount in half with the same time and it still didn’t all pop. PLEASE HELP.
    Thank you for your help on these. Merry Christmas

    1. Hey Claudia,

      It’s normal for some of the popcorn not to pop, that even happens when you make store-bought microwave popcorn. But if you have a lot of unpopped popcorn, you may not be leaving it in the microwave long enough. Microwaves come in different wattages, so some cook faster than others. I usually put five minutes on my microwave, then listen for the popping to slow down, which for me is the two and a half to three minute mark. You may just find that it requires a little longer on your microwave. Another possibility is that the brand or freshness of the popcorn kernels is causing you to have more unpopped corn that you’d normally have. Hope these ideas help.

  3. I bought this popcorn bag when they first appeared on the site for sale, and I love it! I’m on a special diet and am happy to stop using the microwave popcorn with its sodium, fat and chemicals. The bag goes into my microwave for about 3 1/2 minutes and does a good job popping the corn. It makes no mess and I haven’t tried washing it yet, but it hasn’t needed it. Thanks for this product, Erin!

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